Daniel 1:9

6 And among these there were, of the children of Judah, Daniel, Hananiah, Mishael, and Azariah.

7 And the captain of the unsexed servants gave them names; to Daniel he gave the name of Belteshazzar, to Hananiah the name of Shadrach, to Mishael the name of Meshach, and to Azariah the name of Abed-nego.

8 And Daniel had come to the decision that he would not make himself unclean with the king's food or wine; so he made a request to the captain of the unsexed servants that he might not make himself unclean.

9 And God put into the heart of the captain of the unsexed servants kind feelings and pity for Daniel.

10 And the captain of the unsexed servants said to Daniel, I am in fear of my lord the king, who has given orders about your food and your drink; what if he sees you looking less happy than the other young men of your generation? then you would have put my head in danger from the king.

11 Then Daniel said to the keeper in whose care the captain of the unsexed servants had put Daniel, Hananiah, Mishael, and Azariah:

12 Put your servants to the test for ten days; let them give us grain for our food and water for our drink.